Rare HIV-1 infected individuals display a significant level of broadly neutralizing antibodies that reflect a pattern of neutralization (i.e. breadth) and potency (i.e. relatively high titer). We hypothesize that the definition of the neutralization specificities present in broadly neutralizing patient sera will tell us the best targets upon which to focus immunogen design efforts to elicit broadly neutralizing responses. Because the regions of Env that are the targets for sera displaying breadth are not yet fully defined, this is important information to guide immunogen design. Such sera demonstrate that given the proper immunogenic stimulus, it is possible to elicit broadly neutralizing HIV antibodies. Using a multi-pronged approach we are identifying the neutralization specificity in the sera by a combination of selective protein-peptide adsorptions, chimeric viruses and by the direct isolation of novel B cell clones. In parallel, we continue to analyze candidate Env-based immunogens in small animals and are mapping the specificity of the elicited neutralizing activity.

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11
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2016
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González, Nuria; McKee, Krisha; Lynch, Rebecca M et al. (2018) Characterization of broadly neutralizing antibody responses to HIV-1 in a cohort of long term non-progressors. PLoS One 13:e0193773
Ssemwanga, Deogratius; Doria-Rose, Nicole A; Redd, Andrew D et al. (2018) Characterization of the Neutralizing Antibody Response in a Case of Genetically Linked HIV Superinfection. J Infect Dis 217:1530-1534
Doria-Rose, Nicole A; Altae-Tran, Han R; Roark, Ryan S et al. (2017) Mapping Polyclonal HIV-1 Antibody Responses via Next-Generation Neutralization Fingerprinting. PLoS Pathog 13:e1006148
Huang, Jinghe; Kang, Byong H; Pancera, Marie et al. (2014) Broad and potent HIV-1 neutralization by a human antibody that binds the gp41-gp120 interface. Nature 515:138-42
Doria-Rose, Nicole A; Schramm, Chaim A; Gorman, Jason et al. (2014) Developmental pathway for potent V1V2-directed HIV-neutralizing antibodies. Nature 509:55-62
Hraber, Peter; Seaman, Michael S; Bailer, Robert T et al. (2014) Prevalence of broadly neutralizing antibody responses during chronic HIV-1 infection. AIDS 28:163-9
Kwong, Peter D; Mascola, John R; Nabel, Gary J (2013) Broadly neutralizing antibodies and the search for an HIV-1 vaccine: the end of the beginning. Nat Rev Immunol 13:693-701
Joyce, M Gordon; Kanekiyo, Masaru; Xu, Ling et al. (2013) Outer domain of HIV-1 gp120: antigenic optimization, structural malleability, and crystal structure with antibody VRC-PG04. J Virol 87:2294-306
Chuang, Gwo-Yu; Acharya, Priyamvada; Schmidt, Stephen D et al. (2013) Residue-level prediction of HIV-1 antibody epitopes based on neutralization of diverse viral strains. J Virol 87:10047-58
Mascola, John R; Haynes, Barton F (2013) HIV-1 neutralizing antibodies: understanding nature's pathways. Immunol Rev 254:225-44

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